Hochul: Upstate rep. just one of several Dems set to skip convention. Photo: AP

There aren’t Greek columns tall or wide enough to camouflage Barack Obama’s impending North Carolina catastrophe. In September, the campaigner-in-chief will travel to Charlotte for his party’s presidential nominating convention. But the southern swing state is turning into a Democratic disaster zone.

Start with the North Carolina Democratic Party. At the state party convention last week, Obama for America was AWOL. The glaring absence of high-level national Obama surrogates was noted “as odd,” according to the Charlotte News and Observer. There’s good reason to steer clear: The party is embroiled in a sordid sex scandal that won’t go away.

Earlier this year, former party communications staffer Adriadn Ortega, 26, accused former state party Executive Director Jay Parmley of repeated sexual harassment and physical groping. Documents leaked to the conservative Daily Caller news site revealed a hush-hush financial settlement involving the two men. Ortega was fired; Parmley resigned; state Democrats went into panic mode.

‘‘If this hits the media, the Democratic Party, our candidates and our credibility are doomed in this election,” a local candidate complained to North Carolina Democratic Party Chairman David Parker. A defiant Parker resisted statewide calls (including a desperate request from outgoing Democratic Gov. Beverly Perdue) to resign. Ortega filed a defamation suit against Parker and the state party last week.

The White House, which has trumpeted its stand against workplace harassment, has been mute on the story.

Other Democrats are boycotting North Carolina to avoid an entirely different taint: the scandal-plagued president himself. By TheDaily.com’s count, at least seven Democratic officials will skip: New York Reps. Bill Owens and Kathy Hochul; Pennsylvania Rep. Mark Critz; three endangered politicians from West Virginia, Gov. Earl Ray Tomblin, Sen. Joe Manchin, and Rep. Nick Rahall; and Utah Rep. Jim Matheson.

The Democratic boycotters have dinged Obama on everything from his election-year illegal-alien amnesty to his failed jobs programs to his destructive war on coal. While “Forward!” may be the official Obama campaign slogan, “Back Away!” is quickly becoming the dissenting Democrats’ rallying cry.

North Carolina is riling Obama’s left flank, too. And national media outlets are noticing. In a piece on the convention “going awry,” Bloomberg News reported:

‘‘Voters just approved a state constitutional amendment to ban gay marriage, which conflicts with Obama’s view on the issue. Convention fund-raising has been slow, and labor unions tapped to fill the financial gap are angry the convention will be in a city — Charlotte — with no unionized hotels and in a state where compulsory union membership or the payment of dues is prohibited as an employment condition.”

Thousands of anarchists, socialists and professional agitators also plan on protesting in Charlotte. Self-declared progressives can’t ignore Team Obama’s in-your-face decision to deliver his presidential nomination acceptance speech at bailed-out Bank of America Stadium.

* In 2008, BofA’s political action committee gave its biggest contributions to Obama totaling $421,000.

* After purchasing junk mortgage company Countrywide, BofA agreed to pay $50 million in restitution payments on behalf of Countrywide subprime-loan fraudster and Democratic fat cat Angelo Mozilo and an underling.

Disgruntled leftists. Disgruntled centrists. Disgruntled unions. Disgruntled corporate donors. Sexual-harassment scandal. Fund-raising woes. And to top it all off: unrepentant class-warfare hypocrisy packaged as “The People’s Convention” and brought to you by Bank of America.

The DNC promises to be a public-relations nightmare for Obama’s optics geniuses. Too bad he can’t send his autopen instead.